Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan.
Molecules. 2018 Jan 29;23(2):277. doi: 10.3390/molecules23020277.
Chiral cylindrical molecular complexes of homo- and hetero-double-helices derived from helicene oligomers self-assemble in solution, providing functional heterogeneous liquid-solid materials. Gels and liotropic liquid crystals are formed by fibril self-assembly in solution; molecular monolayers and fibril films are formed by self-assembly on solid surfaces; gels containing gold nanoparticles emit light; silica nanoparticles aggregate and adsorb double-helices. Notable dynamics appears during self-assembly, including multistep self-assembly, solid surface catalyzed double-helix formation, sigmoidal and stairwise kinetics, molecular recognition of nanoparticles, discontinuous self-assembly, materials clocking, chiral symmetry breaking and homogeneous-heterogeneous transitions. These phenomena are derived from strong intercomplex interactions of chiral cylindrical molecular complexes.
手性圆柱状分子复合物由源于螺旋寡聚物的同/异双螺旋自组装而成,在溶液中提供功能不均一的固-液相材料。纤维自组装在溶液中形成凝胶和向列相液晶;分子单层和纤维薄膜通过在固体表面自组装形成;含金纳米颗粒的凝胶发光;硅纳米颗粒聚集并吸附双螺旋。自组装过程中出现显著的动力学现象,包括多步自组装、固体表面催化双螺旋形成、阶跃动力学、纳米颗粒的分子识别、不连续自组装、材料计时、手性对称破缺和均相-非均相转变。这些现象源于手性圆柱状分子复合物的强相互作用。